ant-design/components/back-top/demo/basic.md

order	title
0	zh-CN en-US 基本 Basic

zh-CN

最简单的用法。

en-US

The most basic usage.

import { BackTop } from 'antd';

ReactDOM.render(
  <div>
    <BackTop />
    Scroll down to see the bottom right <strong>gray</strong> button.
  </div>,
  mountNode
);